/*
 * Copyright 2019 The Kubernetes Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import type { Arguments } from '@kui-shell/core'

/**
 * This plugin introduces the /confirm command
 *
 */
export default async function confirm(args: Arguments) {
  const { tab, argvNoOptions, parsedOptions, execOptions, REPL } = args
  const [{ i18n }, { ExecType }, { getPrimaryTabId }, { pexecInCurrentTab }, { eventChannelUnsafe }] =
    await Promise.all([
      import('@kui-shell/core/mdist/api/i18n'),
      import('@kui-shell/core/mdist/api/Command'),
      import('@kui-shell/core/mdist/api/Tab'),
      import('@kui-shell/core/mdist/api/Exec'),
      import('@kui-shell/core/mdist/api/Events')
    ])

  const strings = i18n('plugin-core-support')

  return new Promise((resolve, reject) => {
    const asking = parsedOptions.asking || strings('areYouSure')
    const command = argvNoOptions[argvNoOptions.indexOf('confirm') + 1]
    const { execUUID } = execOptions

    if (!command) {
      throw new Error('Usage: confirm command line')
    }

    const requestChannel = `/kui-shell/Confirm/v1/tab/${getPrimaryTabId(tab)}`
    const responseChannel = `${requestChannel}/execUUID/${execUUID}/confirmed`

    const onConfirm = ({ confirmed }: { confirmed: boolean }) => {
      if (!confirmed) {
        reject(strings('operationCancelled'))
      } else if (execOptions.type === ExecType.Nested) {
        pexecInCurrentTab(command, tab).then(resolve, reject)
      } else {
        REPL.qexec(command, undefined, undefined, { tab }).then(resolve, reject)
      }
    }

    eventChannelUnsafe.once(responseChannel, onConfirm)
    eventChannelUnsafe.emit(requestChannel, { command, asking, execUUID })
  })
}
